Purpose This retrospective analysis examined group differences in error rate across 4
contextual variables (clusters vs. singletons, syllable position, number of syllables, and …

Background: Variability in speech sound errors has been regarded as a primary
characteristic of apraxia of speech (AOS). Early research deemed errors extremely …

Purpose Diagnostic recommendations for acquired apraxia of speech (AOS) have been
contradictory concerning whether speech sound errors are consistent or variable. Studies …

Early apraxia of speech (AOS) research depicted errors as being unpredictable resulting in
a number of different error types on repeated productions of the same stimuli. However …

This investigation was designed to examine articulatory variability over time in an individual
with AOS and aphasia. Stimuli were randomly presented on three sampling occasions and …

Purpose Early apraxia of speech (AOS) research has characterized errors as being variable,
resulting in a number of different error types being produced on repeated productions of the …

Purpose Loosely defined diagnostic criteria for acquired apraxia of speech (AOS) limit
clinicians' ability to diagnose the disorder validly and reliably. The purpose of this study was …

Purpose The primary characteristics used to define acquired apraxia of speech (AOS) have
evolved to better reflect a disorder of motor planning/programming. However, there is debate …

Background: Many researchers and clinicians have suggested that a definitive characteristic
of adult apraxia of speech (AOS) is that the speech sound errors are highly variable …

This investigation was designed to examine the effects of (1) method of stimuli presentation
and (2) sampling over time on production of stop consonants with a speaker with acquired …